Classifications

• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07J—STEROIDS
  • C07J63/00—Steroids in which the cyclopenta(a)hydrophenanthrene skeleton has been modified by expansion of only one ring by one or two atoms
  • C07J63/008—Expansion of ring D by one atom, e.g. D homo steroids
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K31/00—Medicinal preparations containing organic active ingredients
  • A61K31/33—Heterocyclic compounds
  • A61K31/395—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
  • A61K31/535—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with at least one nitrogen and one oxygen as the ring hetero atoms, e.g. 1,2-oxazines
  • A61K31/5365—Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with at least one nitrogen and one oxygen as the ring hetero atoms, e.g. 1,2-oxazines ortho- or peri-condensed with heterocyclic ring systems
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
  • A61K31/00—Medicinal preparations containing organic active ingredients
  • A61K31/56—Compounds containing cyclopenta[a]hydrophenanthrene ring systems; Derivatives thereof, e.g. steroids
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
  • A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
  • A61P31/12—Antivirals
  • A61P31/14—Antivirals for RNA viruses
  • A61P31/18—Antivirals for RNA viruses for HIV

Definitions

• the invention relates to compounds, compositions, and methods for the treatment of human immunodeficiency virus (HIV) infection. More particularly, the invention provides novel triterpenoid compounds as inhibitors of HIV, pharmaceutical
• compositions containing such compounds, and methods for using these compounds in the treatment of HIV infection are also relates to methods for making the compounds
• HIV infection is the result of infection by HIV. 15 HIV infection remains a major medical problem, with an estimated 45-50 million people infected worldwide at the end of 2011 , 3.3 million of them under the age of 15. In 2011 , there were 2.5 million new infections, and 1.7 million deaths from complications due to HIV/AIDS.
• agents belong to a number of different classes, targeting either a viral enzyme or the function of a viral protein during the virus replication cycle. Thus, agents are classified as either nucleotide reverse
• NRTIs 25 transcriptase inhibitors
• non-nucleotide reverse transcriptase inhibitors 25 transcriptase inhibitors (NRTIs), non-nucleotide reverse transcriptase inhibitors
• NRTIs protease inhibitors
• IIs integrase inhibitors
• entry inhibitors one, maraviroc, targets the host CCR5 protein, while the other, enfuvirtide, is a peptide that targets the gp41 region of the viral gpl60 protein.
• a pharmacokinetic enhancer with no antiviral activity i.e., cobicistat, available from Gilead Sciences, Inc. 30 under the tradename TYBOSTTM (cobicistat) tablets, has recently been approved for use in combinations with certain antiretroviral agents (ARVs) that may benefit from boosting.
• ARVs antiretroviral agents
• the invention encompasses compounds of Formula I, including pharmaceutically acceptable salts thereof, as well as pharmaceutical compositions, and their use in inhibiting HIV and treating those infected with HIV or AIDS.
• a compound of Formula I including pharmaceutically acceptable salts thereof:
• Ri is isopropenyl or isopropyl
• X is a phenyl or heteroaryl ring substituted with A, wherein A is at least one member selected from -H, -halo, -hydroxyl, -Ci-6 alkyl, -Ci-6 alkoxy, and -COOR2;
• R2 is -H, -Ci-6 alkyl, -alkylsubstituted Ci-6 alkyl or-arylsubstituted Ci-6 alkyl;
• Y is selected from -COOR2, -C(0)NR 2 S0 2 R3, - C(0)NHS0 2 NR2R2, -NR2SO2R2,
• W is selected from -CH2OR2, -COOR2, -NR4R5, -CONR26R27, -CH2NR26R27, -NR4COR6, -NR 4 C(0)NR 4 R5, and -NR4COOR,;
• R41S selected from -H, -Ci-6 alkyl, -Ci-6 alkyl-C(OR3)2-C3-6 Cycloalkyl, -Ci-6 substituted alkyl, -Ci-6 alkyl-C3-6 cycloalkyl, -Ci-6 alkyl-Qi, -Ci-6 alkyl-C3-6 cycloalkyl-Qi, aryl, heteroaryl, substituted heteroaryl, -CORe, -COCORe, -SO2R7, -SO2NR2R2, wherein Qi is selected from C3-10 carbocycle, substituted C3-10 carbocycle, C3-10 heterocycle, substituted C3-10 hetereocycle, aryl, heteroaryl, substituted heteroaryl, halogen, -CF 3 , -OR2, -COOR2, -NRsR -CONR10R11 and -SO2R7;
• R5 is selected from -H, -Ci-6 alkyl, -C3-6 cycloalkyl, -Ci-6 alkylsubstituted alkyl, -Ci-6 alkyl-NR 8 R9, -CORe, -COCORe, -SO2R7 and -SO2NR2R2; with the proviso that only one of R4 or R5 can be selected from -CORe, -COCORe,
• R6 is selected from -H, -Ci-6 alkyl, -Ci-6 alkyl-substitutedalkyl, -C3-6 cycloalkyl, -C3-6 substitutedcycloalkyl-Q2, -Ci-6 alkyl-Q2, -Ci-6 alkyl-substitutedalkyl-Q2,-C3-6 cycloalkyl- Q2, aryl-Q2, -NR13R14, and -OR15; wherein Q2 is selected from C3-10 carbocycle, substituted C3-10 carbocycle, C3-10 heterocycle, substituted C3-10 hetereocycle, aryl, heteroaryl, substituted heteroaryl, -OR2, -COOR2, -NR8R9, SO2R7, -CONHSO2R3, and -CONHSO2NR2; R7 is selected from -Ci-6 alkyl, -Ci-6 substituted alkyl, -C3-6 cycloalkyl,
• Re and R9 are independently selected from -H, -Ci-6 alkyl, -Ci-6 substituted alkyl, aryl, heteroaryl, substituted aryl, substituted heteroaryl, -Ci-6 alkyl-Q2, and -COOR3, or Rs and R9 are taken together with the adjacent N to form a cycle selected from:
• V is selected from -CR24R25, -SO2, -O and -NR12;
• M is selected from -CHR24R25, -NRieRiv, -SO2R7, -SO2NR3R3 and -OH; with the proviso that only one of Rs or R9 can be -COOR3; Rio and Rn are independently selected from -H, -Ci-6 alkyl, -Ci-6 substituted alkyl and -C3-6 cycloalkyl,
• Ri 1 are taken together with the adjacent N to form a cycle such as
• R121S selected from -Ci-6 alkyl, -Ci-6 alkyl-OH; -Ci-6 alkyl, -Ci-6 substituted alkyl,-C3-6 cycloalkyl, -COR7, -COONR22R23, -SOR7, and -SONR24R25;
• Ri3 and R14 are independently selected from -H, -Ci-6 alkyl, -C3-6 cycloalkyl, -Ci-6 substituted alkyl, -Ci-6 alkyl-Q3, -Ci-6 alkyl-C3-6 Cycloalkyl-Q3 and Ci-6 substituted alkyl- :
• Q3 is selected from heteroaryl, substituted heteroaryl, -NR20R21, " CONR2R2, -COOR2,
• Ri5 is selected from -Ci-6 alkyl, -C3-6 cycloalkyl, -Ci-6 substituted alkyl, -Ci-6 alkyl-Q3, -Ci- 6 alkyl-C3-6 cycloalkyl-Q3 and -Ci-6 substituted alkyl-Q3;
• Ri6 is selected from -H, -Ci-6 alkyl, -NR2R2, and -COOR3; Ri7 is selected from -H, -Ci-6 alkyl, -COOR3, and aryl;
• Ri8 is selected from -COOR2 and -Ci-6 alkyl-COOR2;
• Ri9 is selected from -H, -Ci-6 alkyl, -Ci-6 alkyl-Q4, -COR3, -COOR3,
• Q4 is selected from -NR2R2 and -OR2;
• R20 and R21 are independently selected from -H, -Ci-6 alkyl, -Ci-6 substituted alkyl, -Ci-6 substituted alkyl-OR2, and -COR3,
• R22 and R23 are independently selected from H, -Ci-6 alkyl, -Ci-6 substituted alkyl, and -Ci 6 cycloalkyl,
• R22 and R23 are taken togethe a cycle selected from
• R24 and R25 are independently from the group of H, -Ci-6 alkyl, -Ci-6 substituted alkyl, -Ci- 6 alkyl-Qi, -Ci-6 cycloalkyl, aryl, substituted aryl, heteroaryl, and substituted heteroaryl, and Q5 is selected from halogen and SO2R3.
• R26 and R27 are independently selected from -H, -Ci-6 alkyl, -Ci-6 substituted alkyl, aryl, heteroaryl, substituted aryl, substituted heteroaryl, -Ci-6 alkyl-Q2,
• R26 and R27 are taken together with the adjacent N to form a cycle selected from:
• composition useful for treating HIV infection comprising a therapeutic amount of a compound of Formula I and a
• the composition further comprises a therapeutically effective amount at least one other agent used for treatment of AIDS or HIV infection selected from nucleoside HIV reverse transcriptase inhibitors, non-nucleoside HIV reverse transcriptase inhibitors, HIV protease inhibitors, HIV fusion inhibitors, HIV attachment inhibitors, CCR5 inhibitors, CXCR4 inhibitors, HIV budding or maturation inhibitors, and HIV integrase inhibitors, and a pharmaceutically acceptable carrier.
• the other agent is dolutegravir.
• a method for treating HIV infection comprising administering a therapeutically effective amount of a compound of Formula I, or a pharmaceutically acceptable salt thereof, to a patient in need thereof.
• the method further comprises administering a therapeutically effective amount of at least one other agent used for treatment of AIDS or HIV infection selected from nucleoside HIV reverse transcriptase inhibitors, non-nucleoside HIV reverse transcriptase inhibitors, HIV protease inhibitors, HIV fusion inhibitors, HIV attachment inhibitors, CCR5 inhibitors, CXCR4 inhibitors, HIV budding or maturation inhibitors, and HIV integrase inhibitors.
• the other agent is dolutegravir.
• the other agent is administered to the patient prior to, simultaneously with, or subsequently to the compound of Formula I.
• the present invention is directed to these, as well as other important ends, hereinafter described.
• Alkenyl means a straight or branched alkyl group comprised of 2 to 10 carbons with at least one double bond and optionally substituted with 0-3 halo or alkoxy group.
• Alkenyloxy means an alkenyl group attached to the parent structure by an oxygen atom.
• Alkoxy means an alkyl group attached to the parent structure by an oxygen atom.
• Alkoxycarbonyl means an alkoxy group attached to the parent structure by a carbonyl moiety.
• Alkyl means a straight or branched saturated hydrocarbon comprised of 1 to 10 carbons, and preferably 1 to 6 carbons.
• Alkylthioxy means an alkyl group attached to the parent structure through a sulfur atom.
• Alkynyl means a straight or branched alkyl group comprised of 2 to 10 carbons, preferably 2 to 6 carbons, containing at least one triple bond and optionally substituted with 0-3 halo or alkoxy group.
• Aryl mean a carbocyclic group comprised of 1-3 rings that are fused and/or bonded and at least one or a combination of which is aromatic.
• the non-aromatic carbocyclic portion, where present, will be comprised of C3 to C7 alkyl group.
• aromatic group include, but are not limited to, phenyl, biphenyl, cyclopropylphenyl, indane, naphthalene, and tetrahydronaphthalene.
• the aryl group can be attached to the parent structure through any substitutable carbon atom in the group.
• Aryloxy is an aryl group attached to the parent structure by oxygen.
• Azaindole means one of the "CH” moieties in the 6-member ring of an indole is substituted with a nitrogen atom.
• Azaindoline means one of the aromatic "CH” moieties of an indoline is substituted with a nitrogen atom.
• Azatetrahydroquinoline means any aromatic CH moiety of tetrahydroquinoline is substituted with a nitrogen atom.
• Benzyloxy means a benzyl group is attached to the parent structure through an oxygen atom.
• the phenyl group of the benzyl moiety could be optionally substituted by 1-3 moieties independently selected from alkyl, alkoxy, halo, haloalkyl, haloalkoxy and cyano.
• Cx-Cy notation indicates a structural element comprised of carbons numbering between 'x' and 'y ⁇ F° r example
• C5-C10 bicycloalkyl means a bicyclic ring system comprised of 5 to 10 carbons, where the rings are attached in a fused, spiro or bridged manner; an example of C5-C10 bicycloalkyl include, but is not limited to,
• C3-C4 cycloalkyl is a subset of monocyclic ring system comprised of 3 to 4 carbons.
• Cycloalkyl means a monocyclic ring system comprised of 3 to 7 carbons.
• Cyano refers to -CN.
• Diazaindole means any two "CH” moieties in the 6-member ring of an indole are substituted with nitrogen atoms.
• Diazaindoline means any two aromatic "CH” moieties of an indoline are substituted with a nitrogen atom.
• Diazatetrahydroquinoline means any two aromatic CH moieties of tetrahydroquinoline are substituted with nitrogen atoms.
• Halo or halogen refers to -F, -CI, -Br, or -I.
• Haloalkyl means an alkyl group substituted by any combination of one to six halogen atoms.
• Haloalkoxy or “Haloalkyloxy” means a haloalkyl group attached to the parent structure through an oxygen atom.
• Heteroaryl is a subset of heterocyclic group as defined below and is comprised of 1-3 rings where at least one or a combination of which is aromatic and that the aromatic group contains at least one atom chosen from a group of oxygen, nitrogen or sulfur.
• Heterocyclyl or heterocyclic means a cyclic group of 1-3 rings comprised of carbon and at least one other atom selected independently from oxygen, nitrogen and sulfur.
• the rings could be bridged, fused and/or bonded, through a direct or spiro attachment, with the option to have one or a combination thereof be aromatic.
• Examples include, but are not limited to, azaindole, azaindoline, azetidine, benzimidazole, bezodioxolyl, benzoisothiazole, benzothiazole, benzothiadiazole, benzothiophene, benzoxazole, carbazole, chroman, dihalobezodioxolyl, dihydrobenzofuran, dihydro- benzo[l,4]oxazine, l,3-dihydrobenzo[c]thiophene 2,2-dioxide, 2,3- dihydrobenzo[d]isothiazole 1,1-dioxide, 3,4-dihydro-2H-pyrido[3,2-b][l,4]oxazine, 2,3- dihydro-lH-pyrrolo[3,4-c]pyridine and its regioisomeric variants, 6,7-dihydro-5H- pyrrolo[2,
• azaindole refers to any of the following regioisomers: 1H- pyrrolo[2,3-b]pyridine, lH-pyrrolo[2,3-c]pyridine, lH-pyrrolo[3,2-c]pyridine, and 1H- pyrrolo[3,2-b]pyridine.
• regioisomer variants notation as in, for example, "5H-pyrrolo[2,3-b]pyrazine and its regioisomeric variants” would also encompass 7H- pyrrolo[2,3-d]pyrimidine, 7H-pyrrolo[2,3-c]pyridazine, lH-pyrrolo[2,3-d]pyridazine, 5H- pyrrolo[3,2-c]pyridazine, and 5H-pyrrolo[3,2-d]pyrimidine.
• 6,7-dihydro-5H- pyrrolo[2,3-b]pyrazine and its regioisomeric variants would encompass 6,7-dihydro-5H- pyrrolo[2,3-d]pyrimidine and 6,7-dihydro-5H-pyrrolo[2,3-c]pyridazine. It is also understood that the lack of "regioisomeric variants" notation does not in any way restrict the claim scope to the noted example only.
• Triterpene or “triterpenoid” means a class of compounds based on three terpene units, which are in turn each based on two isoprene units. Triterpenes exist in a large variety of structures and can be broadly divided according to the number of rings present. The triterpenoids of the present invention are in general pentacyclic structures, i.e. having five rings.
• Tetrahydroquinoline means 1,2,3,4-tetrahydroquinoline.
• the invention includes all pharmaceutically acceptable salt forms of the compounds.
• Pharmaceutically acceptable salts are those in which the counter ions do not contribute significantly to the physiological activity or toxicity of the compounds and as such function as pharmacological equivalents. These salts can be made according to common organic techniques employing commercially available reagents.
• Some anionic salt forms include acetate, acistrate, besylate, bromide, chloride, citrate, fumarate, glucouronate, hydrobromide, hydrochloride, hydroiodide, iodide, lactate, maleate, mesylate, nitrate, pamoate, phosphate, succinate, sulfate, tartrate, tosylate, and xinofoate.
• Some cationic salt forms include ammonium, aluminum, benzathine, bismuth, calcium, choline, diethylamine, diethanolamine, lithium, magnesium, meglumine,
• the invention includes all stereoisomeric forms of the compounds including enantiomers and diastereromers. Methods of making and separating stereoisomers are known in the art.
• the invention includes all tautomeric forms of the compounds.
• the invention includes atropisomers and rotational isomers.
• the invention is intended to include all isotopes of atoms occurring in the present compounds.
• Isotopes include those atoms having the same atomic number but different mass numbers.
• isotopes of hydrogen include deuterium and tritium.
• isotopes of carbon include 13 C and 14 C.
• Isotopically- labeled compounds of the invention can generally be prepared by conventional techniques known to those skilled in the art or by processes analogous to those described herein, using an appropriate isotopically-labeled reagent in place of the non-labeled reagent otherwise employed. Such compounds may have a variety of potential uses, for example as standards and reagents in determining biological activity.
• such compounds may have the potential to favorably modify biological, pharmacological, or pharmacokinetic properties.
• some ring structures are shown with a variable number of members in the ring.
• the following ring substituent having the parenthetical "( )i,2" is intended to encompass both a single carbon group, -(CH2)-, and a two carbon group, -(CH2CH2)-.
• the intended ring structures could individually be depicted as:
• the compounds of the invention also include "prodrugs".
• prodrug' used herein encompasses both the term “prodrug esters” and the term “prodrug ethers
• Ri is isopropenyl or isopropyl
• X is a phenyl or heteroaryl ring substituted with A, wherein A is at least one member selected from -H, -halo, -hydroxyl, -Ci-6 alkyl, -Ci-6 alkoxy, and -COOR2;
• R2 is -H, -Ci-6 alkyl, -alkylsubstituted Ci-6 alkyl or-arylsubstituted Ci-6 alkyl;
• R3 is -Ci-6 alkyl or -alkylsubstituted Ci-6 alkyl
• W is selected from -CH2OR2, -COOR2, -NR4R5, -CONR26R27, -CH2NR26R27, -NR4COR6, -NR 4 C(0)NR 4 R5, and -NR4COOR,;
• R41S selected from -H, -Ci-6 alkyl, -Ci-6 alkyl-C(OR3)2-C3-6 cycloalkyl, -Ci-6 substituted alkyl, -Ci-6 alkyl-C3-6 cycloalkyl, -Ci-6 alkyl-Qi, -Ci-6 alkyl-C3-6 Cycloalkyl-Qi, aryl, heteroaryl, substituted heteroaryl, -CORe, -COCORe, -SO2R7, -SO2NR2R2, wherein Qi is selected from C3-10 carbocycle, substituted C3-10 carbocycle, C3-10 heterocycle, substituted C3-10 hetereocycle, aryl, heteroaryl, substituted heteroaryl, halogen, -CF3, -OR2, -COOR2, -NRsRsi, -CONR10R11 and -SO2R7; R5 is selected from -H, -Ci-6 alkyl
• R6 is selected from -H, -Ci-6 alkyl, -Ci-6 alkyl-substitutedalkyl, -C3-6 cycloalkyl, -C3-6 substitutedcycloalkyl-Q2, -Ci-6 alkyl-Q2, -Ci-6 alkyl-substitutedalkyl-Q2,-C3-6 cycloalkyl- Q 2 , aryl-Q 2 , -NR13R14, and -OR15; wherein Q2 is selected from C3-10 carbocycle, substituted C3-10 carbocycle, C3-10 heterocycle, substituted C3-10 hetereocycle, aryl, heteroaryl, substituted heteroaryl, -OR2, -COOR2, -NRsRs, SO2R7, -CONHSO2R3, and -CONHSO2NR2R2;
• R7 is selected from -Ci-6 alkyl, -Ci-6 substituted alkyl, -C3-6 cycloalkyl, aryl, and heteroaryl;
• Re and R9 are independently selected from -H, -Ci-6 alkyl, -Ci-6 substituted alkyl, aryl, heteroaryl, substituted aryl, substituted heteroaryl, -Ci-6 alkyl-Q2, and -COOR3,
• V is selected from -CR24R25, -SO2, -O and -NR12;
• M is selected from -CHR24R25, -NRieRiv, -SO2R7, -SO2NR3R3 and -OH; with the proviso that only one of Rs or R9 can be -COOR3;
• Rio and R11 are independently selected from -H, -Ci-6 alkyl, -Ci-6 substituted alkyl and -C3-6 cycloalkyl,
• Ri 1 are taken together with the adjacent N to form a cycle such as
• R12 1S selected from -Ci-6 alkyl, -Ci-6 alkyl-OH; -Ci-6 alkyl, -Ci-6 substituted alkyl,-C3-6 cycloalkyl, -COR7, -COONR22R23, -SOR7, and -SONR24R25;
• Ri3 and Ri4 are independently selected from -H, -Ci-6 alkyl, -C3-6 cycloalkyl, -Ci-6 substituted alkyl, -Ci-6 alkyl-Q3, -Ci-6 alkyl-C3-6 Cycloalkyl-Q3 and Ci-6 substituted alkyl- :
• Q3 is selected from heteroaryl, substituted heteroaryl, -NR20R21, " CONR2R2, -COOR2, Ri5 is selected from -Ci-6 alkyl, -C3-6 cycloalkyl, -Ci-6 substituted alkyl, -Ci-6 alkyl-Q3, -Ci- 6 alkyl-C3-6 cycloalkyl-Q3 and -Ci-6 substituted alkyl-Q3;
• Ri6 is selected from -H, -Ci-6 alkyl, -NR2R2, and -COOR3; Ri7 is selected from -H, -Ci-6 alkyl, -COOR3, and aryl;
• Ri8 is selected from -COOR2 and -Ci-6 alkyl-COOR2;
• Ri9 is selected from -H, -Ci-6 alkyl, -Ci-6 alkyl-Q4, -COR3, -COOR3,
• Q4 is selected from -NR2R2 and -OR2;
• R20 and R21 are independently selected from -H, -Ci-6 alkyl, -Ci-6 substituted alkyl, -Ci-6 substituted alkyl-OR2, and -COR3, or R20 with the proviso that only one of R20 or R2i can be -COR3;
• R22 and R23 are independently selected from H, -Ci-6 alkyl, -Ci-6 substituted alkyl, and -Ci- 6 cycloalkyl,
• R22 and R23 are taken togethe a cycle selected from
• R24 and R25 are independently from the group of H, -Ci-6 alkyl, -Ci-6 substituted alkyl, -Ci- 6 alkyl-Q5, -C 1-6 cycloalkyl, aryl, substituted aryl, heteroaryl, and substituted heteroaryl, and Q5 is selected from halogen and SO2R3.
• R26 and R27 are independently selected from -H, -Ci-6 alkyl, -Ci-6 substituted alkyl, aryl, heteroaryl, substituted aryl, substituted heteroaryl, -Ci-6 alkyl-Q2,
• Ri is isopropyl.
• X is phenyl.
• a compound of Formula I wherein
• Y is -COOH.
• R4 is selected from -H, -Ci-6 alkyl, -Ci-6 alkyl-Qi, and -CORe.
• R4 is -Ci-6 alkyl-Qi.
• a compound including pharmaceutically acceptable salts thereof, which is selected from:
• a pharmaceutical composition which comprises an antiviral effective amount of one or more of the compounds of the present invention, together with one or more pharmaceutically acceptable carriers, excipients or diluents.
• composition useful for treating HIV infection comprising a therapeutic amount of a compound of Formula I and a
• the composition further comprises a therapeutically effective amount at least one other agent used for treatment of AIDS or HIV infection selected from nucleoside HIV reverse transcriptase inhibitors, non-nucleoside HIV reverse transcriptase inhibitors, HIV protease inhibitors, HIV fusion inhibitors, HIV attachment inhibitors, CCR5 inhibitors, CXCR4 inhibitors, HIV budding or maturation inhibitors, and HIV integrase inhibitors, and a pharmaceutically acceptable carrier.
• the other agent is dolutegravir.
• a method for treating HIV infection comprising administering a therapeutically effective amount of a compound of Formula I, or a pharmaceutically acceptable salt thereof, to a patient in need thereof.
• the method further comprises administering a therapeutically effective amount of at least one other agent used for treatment of AIDS or HIV infection selected from nucleoside HIV reverse transcriptase inhibitors, non-nucleoside HIV reverse transcriptase inhibitors, HIV protease inhibitors, HIV fusion inhibitors, HIV attachment inhibitors, CCR5 inhibitors, CXCR4 inhibitors, HIV budding or maturation inhibitors, and HIV integrase inhibitors.
• the other agent is dolutegravir.
• the other agent is administered to the patient prior to, simultaneously with, or subsequently to the compound of Formula I.
• compositions are comprised of a therapeutically effective amount of a compound of Formula I or its pharmaceutically acceptable salt, and a pharmaceutically acceptable carrier and may contain conventional excipients and/or diluents.
• a therapeutically effective amount is that which is needed to provide a meaningful patient benefit.
• Pharmaceutically acceptable carriers are those conventionally known carriers having acceptable safety profiles.
• Compositions encompass all common solid and liquid forms, including capsules, tablets, lozenges, and powders, as well as liquid suspensions, syrups, elixirs, and solutions. Compositions are made using available formulation techniques, and excipients (such as binding and wetting agents) and vehicles (such as water and alcohols) which are generally used for compositions. See, for example, Remington's Pharmaceutical Sciences, 17th edition, Mack Publishing
• compositions which are normally formulated in dosage units and compositions providing from about 1 to 1000 mg of the active ingredient per dose are preferred. Some examples of dosages are 1 mg, 10 mg, 100 mg, 250 mg, 500 mg, and 1000 mg. Generally, other antiretroviral agents will be present in a unit range similar to agents of that class used clinically. Typically, this is about 0.25-1000 mg/unit.
• Liquid compositions are usually in dosage unit ranges. Generally, the liquid composition will be in a unit dosage range of about 1-100 mg/mL. Some examples of dosages are 1 mg/mL, 10 mg/mL, 25 mg/mL, 50 mg/mL, and 100 mg/mL. Generally, other antiretroviral agents will be present in a unit range similar to agents of that class used clinically. Typically, this is about 1-100 mg/mL.
• the invention encompasses all conventional modes of administration; oral and parenteral methods are preferred.
• the dosing regimen will be similar to other antiretroviral agents used clinically.
• the daily dose will be about 1-100 mg/kg body weight daily.
• more compound is required orally and less parenterally.
• the specific dosing regimen will be determined by a physician using sound medical judgment.
• the compounds of this invention desireably have activity against HIV.
• another aspect of the invention is a method for treating HIV infection in a human patient comprising administering a therapeutically effective amount of a compound of Formula I, including a pharmaceutically acceptable salt thereof, with a pharmaceutically acceptable carrier, excipient and/or diluent.
• the invention also encompasses methods where the compound is given in combination therapy. That is, the compound can be used in conjunction with, but separately from, other agents useful in treating AIDS and HIV infection.
• the compound can also be used in combination therapy wherein the compound and one or more of the other agents are physically together in a fixed-dose combination (FDC).
• FDC fixed-dose combination
• Some of these agents include HIV attachment inhibitors, CCR5 inhibitors, CXCR4 inhibitors, HIV cell fusion inhibitors, HIV integrase inhibitors, HIV nucleoside reverse transcriptase inhibitors, HIV non-nucleoside reverse transcriptase inhibitors, HIV protease inhibitors, budding and maturation inhibitors, immunomodulators, and anti-infectives.
• the compound of Formula I will generally be given in a daily dose of about 1-100 mg/kg body weight daily in conjunction with other agents.
• the other agents generally will be given in the amounts used therapeutically.
• the specific dosing regimen will be determined by a physician using sound medical judgment.
• Combination means that the components are part of a combination antiretroviral therapy or HAART as understood by practitioners in the field of AIDS and HIV infection.
• contemplated herein are combinations of the compounds of Formula I, together with one or more agents useful in the treatment of AIDS.
• the compounds of the invention may be effectively administered, whether at periods of pre-exposure and/or post-exposure, in combination with effective amounts of the AIDS antivirals, immunomodulators, anti-infectives, or vaccines, such as those in the following non-limiting table:
• Famciclovir Smith Kline herpes zoster Famciclovir Smith Kline herpes zoster
• ARC asymptomatic HIV positive, also in combination with AZT/ddl/ddC
• ISIS 2922 ISIS Pharmaceuticals CMV retinitis KNI-272 Nat'l Cancer Institute HIV-assoc. diseases Lamivudine, 3TC Glaxo Wellcome HIV infection,
• Ribavirin (Costa Mesa, CA) positive, LAS, ARC VX-478 Vertex HIV infection, AIDS,
• TAK-652 Takeda HIV infection
• VIREAD ® VIREAD ®
• EMTRIVA 3 Emtricitabine
• HIV Core Particle Rorer Seropositive HIV Immunostimulant IL-2 Cetus AIDS in combination
• Interleukin-2 CD4 cell counts (aldeslukin) Immune Globulin Cutter Biological Pediatric AIDS, in Intravenous (Berkeley, CA) combination w/AZT (human) IMREG-1 Imreg AIDS, Kaposi's
• Tumor Necrosis Genentech ARC in combination Factor; TNF w/gamma Interferon
• “Therapeutically effective” means the amount of agent required to provide a meaningful patient benefit as understood by practitioners in the field of AIDS and HIV infection. In general, the goals of therapeutically effective treatment include suppression of viral load, restoration and preservation of immunologic function, improved quality of life, and reduction of HIV-related morbidity and mortality.
• "Patient” means a person infected with the HIV virus and suitable for therapy as understood by practitioners in the field of AIDS and HIV infection.
• the compounds of the invention according to the various aspects can be made by various methods available in the art, including those of the following schemes in the specific examples which follow.
• the structure numbering and variable numbering shown in the synthetic schemes may be distinct from, and should not be confused with, the structure or variable numbering in the claims or the rest of the specification.
• the variables in the schemes are meant only to illustrate how to make some of the compounds of the invention.
• Solvent A 90% Water, 10% Methanol, 0.1% TFA
• Solvent B 10% Water, 90% Methanol, 0.1% TFA
• Solvent A 90% Water, 10% Methanol, 0.1% TFA
• Solvent B 10% Water, 90% Methanol, 0.1% TFA
• Solvent A 90% Water, 10% Methanol, 0.1% TFA
• Solvent B 10% Water, 90% Methanol, 0.1% TFA
• Solvent A 90% Water, 10% Methanol, 0.1% TFA
• Solvent B 10% Water, 90% Methanol, 0.1% TFA
• Solvent A 90% Water, 10% Methanol, 0.1% TFA
• Solvent B 10% Water, 90% Methanol, 0.1% TFA
• sample preparation 18.2g in 500mL MeOH:THF (1 :2), 36.4mg/mL
• Solvent A 90% Water, 10% acetonitrile, 0.1% TFA
• Solvent B 10% Water, 90% acetonitrile, 0.1% TFA
• Solvent A 90% Water, 10% acetonitrile, 0.1% TFA
• Solvent B 10% Water, 90% acetonitrile, 0.1% TFA
• the resulting slurry was chilled in an ice bath and filtered, and the isolated solid was washed with ice cold ethyl acetate and allowed to air dry.
• the isolated solid (labeled isolate 01) was dried in a vacuum oven at 50 degrees C to give 7.03 g (57.2% yield) as a white powder.
• This first isolate was highly enriched in the major 9(S) diastereomer and was set aside.
• the filtrate was concentrated in vacuo and the residue was purified by flash silica gel chromatography (220 g silica, elution gradient 100% hexanes to 20: 1 hexanes :EtOAc). Distereomers were not separated and the
• Step 1 Preparation of methyl 4-((lS,3aS,5aR,5bR,7aS, l laS, l lbR,13aR,13bR)- 3a-((2-(dimethylamino)ethyl)carbamoyl)- l-isopropyl-5a,5b,8, 8, 11a-
• Step 2 Preparation of 4-((lS,3aS,5aR,5bR,7aS,9R,l laS, l lbR,13aR,13bR)-3a- ((2-(dimethylamino)ethyl)carbamoyl)-l-isopropyl-5a,5b,8,8,l la-pentamethylicosahydro- 1 H-cyclopenta[a] chry sen-9-y l)benzoic acid .
• the title compound was prepared by the same procedure as described for the preparation of 4-((lS,3aS,5aR,5bR,7aS,9R,l laS,l lbR,13aR, 13bR)-3a-((2- (dimemylamino)ethyl)carbamoyl)-l-isopropyl-5a,5b,8,8,l la-pentamethylicosahydro-lH- cyclopenta[a]chrysen-9-yl)benzoic acid, except N 1 , N 1 -dimethylpropane- 1 ,3-diamine (0.0058 g, 0.056 mmol) was used instead of Nl,Nl-dimethylethane-l,2-diamine in Step 1.
• Step 1 Preparation of methyl 4- ((lS,3aS,5aR,5bR,7aS,9R,l laS, l lbR, 13aR,13bR)-3a-amino-l-isopropyl-5a,5b,8,8,l la- pentamethylicosahydro-
• Isomer 1 methyl 4-((lS,3aS,5aR,5bR,7aS,9R,l laS,l lbR, 13aR, 13bR)-3a-amino- l-isopropyl-5a,5b,8,8, 1 la-pentamethylicosahydro-lH-cyclopenta[a]chrysen-9- yl)benzoate.
• This isomer was the first to elute from the preparative HPLC. 37.9 mg white powder isolated as TFA salt (33.8% yield).
• LCMS: m/z 548.4 (M+H) + , 4.27 min (Method 4).
• Isomer 2 methyl 4-((lS,3aS,5aR,5bR,7aS,9S,l laS, l lbR,13aR,13bR)-3a-amino- l-isopropyl-5a,5b,8,8, l la-pentamethylicosahydro-lH-cyclopenta[a]chrysen-9- yl)benzoate.
• This isomer was the second to elute from the preparative HPLC. 42.8 mg white powder isolated as TFA salt (38.1% yield).
• LCMS: m/z 548.4 (M+H) + , 4.27 min (Method 4).
• Step 2 Preparation of 4-((lS,3aS,5aR,5bR,7aS,9R, l laS, l lbR,13aR,13bR)-3a-amino-l- isopropyl-5a,5b,8,8, 1 la-pentamethylicosahydro- lH-cyclopenta[a]chrysen-9-yl)benzoic acid.
• Step 1 Preparation of methyl 4-((lS,3aS,5aR,5bR,7aS,l laS,l lbR,13aR,13bR)-3a-(3-(2-)
• Step 2 Preparation of 4-((lS,3aS,5aR,5bR,7aS,9R,llaS,llbR,13aR,13bR)-3a-(3-(2- (dimemylamino)ethyl)ureido)-l-isopropyl-5a,5b,8,8,lla-pentamethylicosahydro-lH- cyclopenta[a]chrys
• the title compound was prepared by the same procedure as described for the preparation of 4-((lS,3aS,5aR,5bR,7aS,9R,l laS,l lbR, 13aR, 13bR)-3a-(((2- (dimethylamino)ethoxy)carbonyl)amino)-l-isopropyl-5a,5b,8,8, l la- pentamethylicosahydro-lH-cyclopenta[a]chrysen-9-yl)benzoic acid, except that ⁇ , ⁇ - dimethylpropane-l,3-diamine (0.026 ml, 0.209 mmol) was used instead of ⁇ , ⁇ - dimethylethane-l,2-diamine (0.023 ml, 0.209 mmol).
• Step 1 Preparation of methyl 4-((lS,3aS,5aR,5bR,7aS, l laS,l lbR,13aR,13bR)- 3a-amino-l-isopropyl-5a,5b,8,8, l la-pentamethylicosahydro-lH-cyclopenta[a]chrysen-9- yl)benzoate hydrochlorid
• Step 2 Preparation of methyl 4-((lS,3aS,5aR,5bR,7aS, l laS,l lbR,13aR,13bR)-l- isopropyl-5a,5b,8,8, l la-pentamethyl-3a-(((pyridin-2-yloxy)carbonyl)amino)icosahydro- 1 H-cyclopenta[a] chry sen-9-y l)benzoate .
• Step 3 Preparation of 4-((lS,3aS,5aR,5bR,7aS,9R,l laS, l lbR,13aR,13bR)-3a- (((2-(dimethylamino)ethoxy)carbonyl)amino)- l-isopropyl-5a,5b,8,8, 11a- pentamethylicos
• the title compound was prepared by a similar procedure as described for the preparation of 4-((lS,3aS,5aR,5bR,7aS,9R,l laS,l lbR, 13aR, 13bR)-3a-(((2- (dimethylamino)ethoxy)carbonyl)amino)-l-isopropyl-5a,5b,8,8, l la- pentamethylicosahydro-lH-cyclopenta[a]chrysen-9-yl)benzoic acid, except that 3- (dimethylamino)propan-l-ol (0.085 g, 0.824 mmol) was used instead of 2- (dimethylamino)ethanol in Step 3. Purification of the crude diastereomeric mixture by reverse phase preparative HPLC provided separation of the title compound.
• Step 1 Preparation of methyl 4-((lS,3aS,5aR,5bR,7aS,l laS, l lbR,13aR,13bR)-3a- amino- l-isopropyl-5a,5b,8,8, 1 la-pentamethylicosahydro- lH-cyclopenta[a]chrysen-9- yl)benzoate.
• HYDROCHLORIC ACID, 6M (2.178 mL, 13.07 mmol) was slowly added and the mixture was stirred at rt for 3d.
• the mixture was partly concentrated under nitrogen stream and to the residue was added ethyl acetate (150 mL).
• This mixture was slowly treated with saturated aqueous sodium bicarbonate (50 mL) and the resulting mixture was shaken carefully and phases were separated. The organic phase was dried over anhydrous magnesium sulfate, filtered and concentrated in vacuo to a white solid.
• Step 2 Preparation of methyl 4-((lS,3aS,5aR,5bR,7aS,l laS, l lbR,13aR,13bR)-3a-(2- (dimethylamino)acetamido)-l-isopropyl-5a,5b,8,8,l la-pentamethylicosahydro-lH- cyclopenta[a]chrysen-9-yl)benzoate.
• Step 3 Preparation of 4-((lS,3aS,5aR,5bR,7aS,9R,l laS,l lbR,13aR,13bR)-3a-(2- (dimethylamino)acetamido)-l-isopropyl-5a,5b,8,8,l la-pentamethylicosahydro-lH- cyclopenta[a]chrysen-9-yl)benzoic acid.
• the title compound was prepared by the same procedure as described in the preparation of 4-(( 1 S,3aS,5aR,5bR,7aS,9R, 1 laS, 1 lbR, 13aR, 13bR)-3a-(2- (dimethylamino)acetamido)-l-isopropyl-5a,5b,8,8,l la-pentamethylicosahydro-lH- cyclopenta[a]chrysen-9-yl)benzoic acid, except 3-(dimethylamino)propanoic acid hydrochloride (0.022 g, 0.142 mmol) was used in place of 2-(dimethylamino)acetic acid hydrochloride in Step 2. Also, in Step 3, the crude product was not extracted from the reaction mixture but rather the reaction mixture was purified directly by reverse phase preparative HPLC to provide separation of the title compound.
• the title compound was prepared by the same procedure as described in the preparation of 4-((lS,3aS,5aR,5bR,7aS,9R,l laS,l lbR, 13aR, 13bR)-3a-(2- (dimethylamino)acetamido)-l-isopropyl-5a,5b,8,8,l la-pentamethylicosahydro-lH- cyclopenta[a]chrysen-9-yl)benzoic acid, except 3-(dimethylamino)butanoic acid hydrochloride (0.024 g, 0.142 mmol) was used in place of 2-(dimethylamino)acetic acid hydrochloride in Step 2. Also, in Step 3, the crude product was not extracted from the reaction mixture but rather the reaction mixture was purified directly by reverse phase preparative HPLC to provide separation of the title compound.
• Step 1 Preparation of methyl 4-((lS,3aS,5aR,5bR,7aS,l laS, l lbR,13aR,13bR)-3a-((2- (( 1 S,4S)-2,2-dioxido-2-thia-5 -azabicyclo [2.2.1 ]heptan-5 -yl)ethyl)amino)- 1 -isopropyl- 5a,5b,8,8, l l a-pentamethylicosahydro- 1 H-cy clopenta[a] chry sen-9-yl)benzoate .
• ⁇ "mL" means milliliter
• HIV cell culture assay - MT-2 cells and 293T cells were obtained from the NIH AIDS Research and Reference Reagent Program.
• MT-2 cells were propagated in RPMI 1640 media supplemented with 10% heat inactivated fetal bovine serum, 100 ⁇ g/ml penicillin G and up to 100 units/ml streptomycin.
• the 293T cells were propagated in DMEM media supplemented with 10% heat inactivated fetal bovine serum (FBS), 100 units/ml penicillin G and 100 ⁇ g/ml streptomycin.
• FBS heat inactivated fetal bovine serum
• the proviral DNA clone of NL4-3 was obtained from the NIH AIDS Research and Reference Reagent Program.
• a recombinant NL4-3 virus in which a section of the nef gene from NL4-3 was replaced with the Renilla luciferase gene, was used as a reference virus.
• residue Gag P373 was converted to P373S.
• the recombinant virus was prepared by transfection of the altered proviral clone of NL4-3. Transfections were performed in 293T cells using LipofectAMINE PLUS from Invitrogen (Carlsbad, CA), according to manufacturer's instruction. The virus was titered in MT-2 cells using luciferase enzyme activity as a marker.
• Luciferase was quantitated using the Dual Luciferase kit from Promega (Madison, WI), with modifications to the manufacturer's protocol.
• the diluted Passive Lysis solution was pre-mixed with the re-suspended Luciferase Assay Reagent and the re-suspended Stop & Glo Substrate (2: 1 : 1 ratio). Fifty (50) of the mixture was added to each aspirated well on assay plates and luciferase activity was measured immediately on a Wallac TriLux (Perkin-Elmer).
• Antiviral activities of inhibitors toward the recombinant virus were quantified by measuring luciferase activity in cells infected for 4- 5 days with NLRluc recombinants in the presence serial dilutions of the inhibitor.
• the EC50 data for the compounds is shown in Table 1. Note that some of the data is provided in abbreviated exponential form such that, for example, 2.53E-3, is equivalent to 2.53 x IO- 3 .

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